44478887 has 4 divisors (see below), whose sum is σ = 44511360. Its totient is φ = 44446416.

The previous prime is 44478883. The next prime is 44478901. The reversal of 44478887 is 78887444.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 44478887 - 2² = 44478883 is a prime.

It is a super-3 number, since 3×44478887³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44478883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14087 + ... + 16952.

It is an arithmetic number, because the mean of its divisors is an integer number (11127840).

Almost surely, 2^44478887 is an apocalyptic number.

44478887 is a deficient number, since it is larger than the sum of its proper divisors (32473).

44478887 is a wasteful number, since it uses less digits than its factorization.

44478887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32472.

The product of its digits is 1605632, while the sum is 50.

The square root of 44478887 is about 6669.2493580612. The cubic root of 44478887 is about 354.3110011264.

The spelling of 44478887 in words is "forty-four million, four hundred seventy-eight thousand, eight hundred eighty-seven".